Tail Lights not working!!

i have a 2007 silverado classic, and my brake lights have stopped working. i checked all the fuses and they are all ok. the third brake light still works, and i know its not just bad light bulbs cause the blinker still works. i even tried chaning the bulb to see if just the brake light filament was bad and that did nothing. im thinking it might be the brake switch relay but im not to sure.

Ok a good place to start would be to have a helper step on the brake pedal while you check for power at the sockets with a volt meter or a test light. Do you know if they both quit working at the same time, or did one go out some time before the other? There has been talk on here about the circuit boards going bad. :-(

OK this sounds like the individual circuit boards then. If this had a common link, they would have both quit at the same time. Go ahead with your power test at the sockets. If no power there, then check for power into the boards. If you have power in, then the boards are bad. This could also be a corrosion problem. Did you see any when you were changing the bulbs out?